How to stop overthinking, overimagining and fear that is caused by overthinking?

[Ms. Manasa pathani asked: Padanamaskaram Swami, Swami how to stop overthinking, overimagining and fear that is caused by overthinking? Kindly enlighten me - at Your lotus feet , Manasa pathani]

Swami replied:- You read the life histories of some incarnations of God and you will get rid of this problem.